Adventura-Ciclying , CycleTourism Senda La Ribera, Bike rental in Suances , Cantabria, Spain. br br Rivers Saja and Besaya on their way to the Cantabrian Sea, mingle their waters a few miles up the mouth to create San Martin's estuary and go down zigzagging to meet the sea at Suances. br br Adventure Cyclying Senda La Ribera br www.sendalaribera.